Nut-lock.



J. PURSSELLEY.

NUT LOCK. APPLICATION FILED OCT. 8. 1914.

Patented May 11, 1915.

ci-Pursaeic y,

appear asthe description procee UNITED STATES PATENT orrron;

JAMES PURSSELLEY, 0F DRUMRIGHT, OKLAHOMA, ASSIGNOR OF ONE-FOURTH ROBERT L. YARIBRO AND ONE-FOURTH TO WILEY C. JONES, BOTH OF DRUMBIGHT,

oKLA ioMA.

NUT-LOCK.

Specification of Letters Patent. Patented Mayll, 1911.5;

Application filed October 8, 1914. 7 Serial No. 865,674.

T all whom it may concern: Be it known that 1, JAMES PURSSELLEY, a citizen of the United States, residing at Drumright, in the county of Greek and State of Oklahoma, have invented certain new an useful Improvements in Nut-Locks; and I do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it ap'pertains to make and use the same.

This. invention relates to new and useful improvements in nut locks, and has for its principal object-to provide a simple and eflicient nut lock which will effectively hold a nut against rotation after the same has been tightened to the desired point.

Another object of the invention is to provide a. device which is capable of being secured to a nut constructed in the ordinary way without undue inconvenience to the user.

A further object of the invention is to provide a device which maybe easily and cheaply manufactured at a minimum amount of expense.

With these and other objects in view, the p invention consists in the novel combination and arrangement of parts which Wlll be fully set forth n Figure 1 is a top plan, view of a'nut lock constructed in accordance with this invention, Fig. 2 is 2-2 of Fig.1, tail sectional Fig. 2.

Referring now ters of reference,

as an entirety a struction comprising the head 2 and threaded shank 3. This bolt is extendedthrou'gh and Fig.3 is an-enlarged deview taken on line o to the drawings by characthefnumeral 1 a suitable aperture formed in the article to be clamped, which is designated by the numeral 4, and said articleis provided w th suitable apertures 5, the use of dWhlCll w1ll s. The nut, which is designated generallyby the numeral 6-, comprises formed therein ing, central bore 8 which is internally screw arranged to cooperate W'ltll the 3. Intermediate the of the nut is formed 9 which is provided stem 13, which stem is -as the bore 9,

' been turned to-the desired a sectional view taken on line designates bolt\of the ordinary c0n-' largement bring the cross. piece tobe the body 7 having' Y the longitudinally extend,

with the end closure 10, which end closure is formed with a central aperture 11 and the double keyhole slot 12, Slidable longitudlnally through provided near its lower terminal with the enlargement 14, which enlargement is ofthesame diameter while the stem is of, the the bore 11. 'A cylindrical extension 15 is formed at the lower-side of the enlargement tension 15 is arranged to engage in the recesses 5' formed in the article which is'being the aperture 9 is'theloclnng 5o 1 14 and this cylindrical exclamped. Extending transversely, of the stem 13 near its upper terminal is thecross piece designated by the numeral 16, which, crosspiece is arrangedto slide throiighthe double keyhole g a vill be apparentturned' to the aperture 9.

this position the OI'OSSYPIGCQI 16 willlie-on the i v upper surface of the nuta'nd transversely of the keyhole slot, thus retaining the device. in its unlocked position. After the nut. has v point,the stem.13- is rotated and thus released so that thecross piecepasses through-the double keyhole slot and under the influence of the coil-spring it will be apparent that ,the extension lti Wlll er the en- 'de of be forced into one o the apertures 5. having passed into the apertures 5,-

e 14 will engage the outer s1 the element which is being clamped the cross piece 16 to a point slightly beneath the end closure 10. This will permit rotated to.a transverse osition with relation to the double'keyhole slot-when the device ism use. Surrounding the stem 13 intermediate the closure 10 and t e enlargement 14 is-a suit- 76 e closure -10-' and- I esired' 1 the stem .13 r ise so that the ex:

and thus.-

slot 12, and thereby, further lock 'thenutm ment of this invention, it isto be understood that such changes may be made in the combination and arrangement of parts as will fall within the spirit, and

defined in the appended claim.

scope of the in vention as the foregoing there has been place and prevent any accidental movement.

' ment being of substantially the same diametransverse bar on ter as the bore, and free to slide therein, a. the stem near its upper end, said bar being a size to permit the to pass through the double keyhole and a coil spring surrounding the stem and arranged to exert downward pressure on the enlargement to force the stem downwardly and into engagement-With the article which is being clamped when the device is same slot,

alfix my signature in presence of two Witnesses.

I JAMES PURSSELLEY.

WVitneSSesLM r MIKE CURRANT, TOM Porn;

ii. e AQ 

